Free Marketing & SEO Tools
Every number a marketer argues about in a meeting, worked out in seconds — paid media economics, SEO diagnostics, and the generators that save an afternoon of fiddling.
- 120 free tools
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Most visited in Business, Marketing & SEO
Keyword Density Checker
Instantly check keyword density and catch keyword stuffing before you publish.
Domain Authority Checker
Estimate your site's authority signals from links, age, spam score, and brand search.
Image Alt Text Generator
Build clear, keyword-smart, accessibility-friendly alt text for any image.
Ordered by how often these pages are shown in Google Search results. Every tool in the category is listed in full below.
A 9 tools
A/B Test Calculator
Check if your split test winner is statistically significant with a real z-test.
Ad Budget & ROAS Calculator
Forecast clicks, conversions, revenue and ROAS from any ad budget — free tool.
Ad Frequency Calculator
Turn impressions and reach into average frequency, weekly frequency and fatigue risk.
AdSense Revenue Calculator
Estimate monthly and annual AdSense revenue by niche, geography, and traffic.
Anchor Text Generator
Generate a balanced mix of branded, exact-match, partial-match, and natural anchor text.
Anchor Text Ratio Calculator
Break a backlink profile into anchor types and flag distributions that look engineered.
ARR Calculator
Convert MRR to ARR and project your growth trajectory with churn, plus months to a target ARR.
Attribution Model Comparison Calculator
See how four attribution models credit the same conversions to different channels.
Audience Reach Calculator
Stack targeting filters against a market to find your reachable audience size.
B 6 tools
Backlink Value Calculator
Estimate the referral and authority value of a single backlink in your own currency.
Blog Title Generator
Turn any topic into 15-25 click-worthy blog titles using proven headline formulas.
Bounce Rate Calculator
Calculate email bounce rate (hard/soft) or website bounce rate — pick your mode.
Brand Search Share Calculator
Split search demand into branded and non-branded and size your share of brand search.
Break-Even Units Calculator
Find how many units you need to sell monthly to break even or hit a profit target.
Business Name Generator
Generate dozens of business name ideas from your keywords in Modern, Classic, Playful, or Premium styles.
C 15 tools
Churn Rate Calculator
Calculate monthly customer churn, revenue churn, customer lifetime, and net revenue retention.
Content Decay Calculator
Measure how fast a page is losing traffic and whether a refresh is worth the time.
Content Gap Calculator
Compare your topics against competitors and rank the gap by volume and difficulty.
Content Marketing ROI Calculator
Model how your content library compounds traffic and revenue over its full lifespan.
Conversion Rate Calculator
Calculate your conversion rate, revenue and value per visitor — free and instant.
Core Web Vitals Score Calculator
Grade LCP, INP, and CLS against Google's thresholds and get one weighted score.
Cost Per Lead Calculator
Calculate cost per lead and see the true cost per customer once conversion rate is factored in.
CPA Calculator
Calculate campaign-level cost per acquisition from ad spend and conversions, and check it against target CPA.
CPC Calculator
Calculate cost per click directly, or the effective CPC hiding inside a CPM campaign.
CPM Calculator
Calculate CPM, impressions bought for a budget, and estimated reach for awareness campaigns.
Crawl Budget Calculator
See how long a full crawl of your site takes and how much of it is wasted.
CTR Calculator
Calculate click-through rate, compare to benchmark, and see the extra clicks a better CTR is worth.
CTR Improvement Calculator
See how many extra clicks and revenue a better click-through rate produces on your existing impressions.
Customer Acquisition Cost Calculator
Calculate your true, fully-loaded CAC including salaries, tools, and agency fees — not just ad spend.
Customer Lifetime Value Calculator
Free CLV calculator: find a customer's lifetime profit, revenue and annual value instantly.
D 2 tools
E 6 tools
Email List Growth Calculator
Project your email list's real growth after subtracting unsubscribes and bounces.
Email Marketing ROI Calculator
Calculate email campaign revenue, profit and ROI instantly — free marketing tool.
Email Open Rate Calculator
Calculate your email open rate and compare it against real industry benchmarks in seconds.
Email Signature Generator
Build a professional HTML email signature for Gmail or Outlook in seconds — free, no software needed.
Email Subject Line Tester
Score your subject line for length, spam words, emoji, and mobile truncation instantly.
Engagement Rate Calculator
See your true engagement rate by followers, reach, and impressions side by side.
F 3 tools
Facebook Ads Character Counter
See live where your Meta primary text, headline, and description get cut off.
FAQ Schema Generator
Turn your questions and answers into valid FAQPage JSON-LD structured data.
Flesch Reading Ease Calculator
Calculate the exact Flesch Reading Ease score and Flesch-Kincaid Grade Level for any text, live.
G 4 tools
GMB Optimization Score Calculator
Audit your Google Business Profile field by field and get a completeness score.
Google Ads Character Counter
Live character counter for Google Ads headlines, descriptions, business name, and display paths.
Google Cache Checker
Generate one-click links to check if a page is indexed now that Google's cache: operator is gone.
Gross Margin Calculator
Calculate gross margin %, gross profit per unit, and the price needed to hit a target margin.
H 3 tools
Hashtag Generator
Generate a mixed, platform-sized hashtag set for Instagram, TikTok, LinkedIn, X, or YouTube.
Headline Analyzer
Score any headline on length, power words, emotion, and structure before you publish.
Htaccess Redirect Generator
Generate safe .htaccess redirect rules for 301s, 302s, HTTPS, www, domains, and bulk migrations.
I 7 tools
Image Alt Text Generator
Build clear, keyword-smart, accessibility-friendly alt text for any image.
Impression Share Calculator
Calculate impression share and split the lost share between rank and budget.
Incrementality Test Calculator
Compare a test group with a holdout to find incremental conversions and true CPA.
Influencer Rate Calculator
Estimate a fair influencer rate by followers, engagement, content type, and usage rights.
Instagram Engagement Calculator
Calculate your Instagram engagement rate by followers and reach, benchmarked by follower tier.
Internal Link Opportunity Calculator
Work out how many internal links your site is missing and which pages need them most.
Invoice Generator
Build a professional invoice with a live preview, then print or save it as a PDF.
K 5 tools
Keyword Cannibalization Checker
Find keywords targeted by more than one page and score how serious each conflict is.
Keyword Cluster Generator
Paste a keyword list and get topic clusters with a suggested pillar page for each.
Keyword Density Checker
Instantly check keyword density and catch keyword stuffing before you publish.
Keyword Difficulty Checker
Estimate how hard a keyword is to rank for using the SERP signals you observe.
Keyword Intent Classifier
Sort keywords into informational, commercial, transactional and navigational intent.
L 7 tools
Landing Page Conversion Calculator
Model the extra monthly and yearly revenue from improving your landing page conversion rate.
Lead Conversion Calculator
Break your funnel into stages and find the weakest link from visitor to closed customer.
Letterhead Generator
Design a print-ready company letterhead with your logo, header, and footer, then print or save as PDF.
Link Velocity Calculator
Measure how fast your referring domains grow and compare the pace to a competitor.
Local SEO Ranking Calculator
Score your map-pack visibility across relevance, distance and prominence with your weights.
LSI Keyword Generator
Generate related questions, modifiers and long-tail variants from any seed keyword.
LTV:CAC Ratio Calculator
Calculate your LTV:CAC ratio and get an instant verdict on whether your growth engine is healthy.
M 9 tools
Marketing Budget Calculator
Turn a percent-of-revenue rule into a full channel-by-channel marketing budget.
Marketing Quiz
Take the 1-minute marketing quiz and find your marketing personality type.
Marketing ROI Calculator
Free marketing ROI calculator: get ROI %, net profit, ROAS and cost per customer fast.
Markup Calculator
Turn unit cost and markup % into a selling price, profit, and the equivalent gross margin.
Media Mix Allocation Calculator
Reallocate a fixed budget across four channels using each channel's cost per acquisition.
Meta Description Length Checker
Check meta description length by real pixel width, not just characters, with a live Google SERP preview.
Meta Tag Generator
Generate clean SEO, Open Graph and Twitter Card meta tags to paste into your page head.
Minimum Detectable Effect Calculator
Find the smallest lift your sample size can detect before you run the test.
MRR Calculator
Build your MRR waterfall: new, expansion, reactivation, contraction, churn, growth rate & quick ratio.
N 2 tools
O 1 tool
P 5 tools
Packing Slip Generator
Create a clean, itemized packing slip with no prices — ship-from, ship-to, and quantities, ready to print.
Payback Period Calculator
Find out how many months until a marketing spend or investment pays for itself.
PPC ROI Calculator
Calculate real PPC return after ad spend, margin, and management fees.
Product Pricing Calculator
Find the selling price that hits your target margin after payment and marketplace fees.
Purchase Order Generator
Build a professional purchase order with live totals and print or save it as a PDF instantly.
Q 2 tools
R 5 tools
Readability Checker
Score your text's Flesch reading ease and grade level instantly.
Receipt Generator
Create a professional payment receipt with a live preview, then print or save it as a PDF.
Revenue Forecast Calculator
Project revenue forward with growth rate, churn, and seasonality — see month 12 today.
ROAS Calculator
Calculate gross ROAS, profit ROAS, and the break-even ROAS your margin actually requires.
Robots.txt Generator
Build a valid robots.txt with WordPress/ecommerce presets and AI crawler blocking, then copy it instantly.
S 15 tools
SaaS Metrics Calculator
Get ARPA, ARR, churn, LTV, CAC, LTV:CAC, payback & gross margin in one health dashboard.
Sales Commission Calculator
Calculate commission across flat, tiered, base+commission, and margin-based structures.
Sales Growth Calculator
Calculate real sales growth, annualized rate, and what's needed to hit your next target.
Sample Size Calculator
Find out how many visitors per variant your A/B test needs before you launch it.
Schema Markup Generator
Generate valid JSON-LD schema markup for LocalBusiness, Article, Product, and more.
SEO Audit Score Calculator
Turn six pillar scores into one weighted SEO audit score with every weight editable.
SEO Content Length Checker
Live word count checker that compares your draft against ranking benchmarks by content type.
SEO ROI Calculator
Model SEO's delayed, compounding return and find your true break-even month.
SEO Traffic Forecast Calculator
Forecast sessions, conversions, and value from a change in ranking position.
SERP Feature Opportunity Calculator
Model how much click-through rate the features above the organic results absorb.
SERP Snippet Preview
Preview how your title and meta description appear in Google, with pixel-accurate width.
SERP Volatility Calculator
Turn a before-and-after ranking list into a volatility score for your own keywords.
Share of Voice Calculator
Measure your share of category impressions and spend, and price a higher share.
Site Migration Risk Calculator
Score a planned migration on URL change, redirects, templates, platform and timing.
Social Media Engagement Calculator
Compare engagement rates across Instagram, Facebook, LinkedIn and X to find your best platform.
T 5 tools
TikTok Money Calculator
Estimate monthly TikTok earnings from Creator Rewards Program payouts and brand deals.
Title Tag Length Checker
Check title tag length by real pixel width against Google's ~600px limit, with a live SERP preview.
Topical Authority Calculator
Score your coverage of a topic against a competitor and size the gap in subtopics.
Traffic Value Calculator
See what your organic traffic would cost to buy on Google Ads — the number that justifies your SEO budget.
Twitter Card Generator
Generate twitter:card meta tags for summary, large image, player, and app cards.
U 3 tools
V 1 tool
W 3 tools
Webinar ROI Calculator
Calculate real webinar ROI from registrations through show-up rate to closed customers.
Website Word Count
Count words from plain text or raw HTML, with reading and speaking time estimates.
Wholesale Price Calculator
Calculate wholesale price, suggested retail price, and margins across the keystone pricing chain.
X 1 tool
Y 1 tool
No business, marketing & seo tool matches that. Search all 822 free tools.
What is in this set
The paid-media calculators answer the questions a dashboard will not: what your break-even ROAS actually is at your margin, what a click is worth before you bid on it, and whether a lift you measured is real or noise. The SEO tools go the other way — they take a page or a profile you already have and tell you what is wrong with it, from keyword cannibalisation to anchor-text distribution to crawl budget waste.
Why the numbers here differ from your ad platform
Ad platforms report ROAS from raw revenue and raw spend because they cannot see your cost of goods. A 4x return looks excellent until you subtract a 75% product cost, at which point it is exactly break-even. Several of these tools ask for margin precisely so the answer reflects your business rather than the platform's view of it.
Where the modelled numbers are flagged
Google publishes no formula for Quality Score, no composite for Core Web Vitals, and no target anchor-text ratio. Where a tool here scores something Google does not publish, the weighting is an Arb Digital model, it is stated on the page, and the inputs are editable so you can substitute your own assumptions.
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