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Free tools
Free tools for marketing teams
26 calculators, validators, and reference tools across UTM management, ad budgeting, attribution, unit economics, channel ROI, and growth modeling. No signup, no email gate, no usage limit.
- Built by the team behind SourceLoop
- Runs in your browser
- Always free
UTM and analytics setup 4
Build clean tagged URLs, validate the ones that already exist, and predict how GA4 will bucket the traffic before you publish.
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UTM Campaign Builder
Build clean, consistent UTM links with built-in best-practice hints. Six standard fields, copy and ship.
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UTM Validator
Paste a tagged URL and see every issue: missing params, mixed case, encoded spaces, non-standard mediums, typos, duplicates.
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Bulk UTM Generator
Paste 50 URLs, get 50 tagged URLs back. Standard mode for shared UTMs, CSV mode for per-row utm_content variants. Download as CSV.
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GA4 Channel Grouping Validator
Plug in utm_source and utm_medium and see exactly which GA4 default channel the visit lands in. Catch '(unassigned)' before publish.
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Ad cost calculators 10
Plan paid spend across the eight platforms that absorb most marketing budgets. Same math, platform-specific defaults and benchmarks.
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Google Ads Cost Calculator
Estimate Google Ads budget across worst, moderate, and best-case scenarios. Lead gen and ecommerce modes.
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LinkedIn Ads Cost Calculator
B2B-economics-aware budget math. Lead Gen Forms vs landing page, Director+ targeting, ACV-driven scenarios.
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Meta Ads Cost Calculator
Plan Meta Ads budgets that survive iOS 14 attribution noise. Server-measured revenue, CAPI recovery, Advantage+ context.
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TikTok Ads Cost Calculator
Cheap clicks, brutal creative cycle, mostly ecom. Spark Ads, TikTok Shop, and 4-6 fresh creatives a month built in.
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YouTube Ads Cost Calculator
TrueView for Action and Performance Max budget math. Video-traffic conversion benchmarks, view-through caveats.
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Pinterest Ads Cost Calculator
Save-then-buy economics. 30-day attribution window, vertical 2:3 Pin format, home/wedding/fashion category fit.
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Microsoft Ads Cost Calculator
Captures the search volume Google leaves behind. LinkedIn audience targeting, older B2B-friendly demographic.
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Bing Ads Cost Calculator
Now officially Microsoft Ads, but the search interest never moved. Same product, same cheaper-than-Google math.
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Reddit Ads Cost Calculator
Subreddit-level targeting, low CPCs, niche audiences. Best for B2B SaaS in tech communities, gaming, crypto, and DTC products with cult followings.
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Snapchat Ads Cost Calculator
Reach 75% of US Gen Z. Vertical video, AR lenses, Story Ads. Best for DTC, fashion, beauty, gaming, mobile apps with younger demographics.
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Attribution and measurement 4
Find which channels actually drive revenue, what attribution iOS 14 broke, and how cohorts retain over time.
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Marketing Attribution Calculator
Compare five attribution models (first, last, linear, time-decay, U-shaped) on the same customer journey side by side.
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Marketing Mix Model Calculator
Diminishing-returns simulator and budget rebalancer. Plug in spend and revenue per channel, see the optimal mix.
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iOS 14 / ATT Attribution Loss Calculator
Estimate how many conversions and how much revenue your reports miss because of Apple ATT, plus CAPI recovery.
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Cohort Retention Curve Generator
Plug in monthly retention and see the curve, half-life, lifespan, and LTV multiplier. SaaS and consumer benchmarks built in.
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Unit economics and funnel 4
The four numbers that decide whether your business is sustainable: CAC, LTV, retention, and end-to-end conversion.
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Customer Acquisition Cost Calculator
CAC, LTV, LTV:CAC ratio, and payback period. The four numbers every SaaS investor wants to see, computed in seconds.
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Customer Retention Rate Calculator
Calculate CRR, churn, GRR, and NRR. Two modes: customer counts and revenue retention for SaaS unit economics.
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Lead Conversion Rate Calculator
Find the leak in your funnel in 30 seconds. Stage CRs, cumulative CR, benchmarks, and a worst-stage callout.
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Sales Funnel Calculator
Forecast revenue from current pipeline, or plan backward from a revenue target to leads needed. Sales velocity, pipeline coverage, cycle math.
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Channel performance and ROI 2
Honest performance math for the two highest-ROI marketing channels: email and content.
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Email Marketing Performance Calculator
Sends, opens, clicks, conversions in. Open rate, CTR, CTOR, revenue per email, and ROI out. Post-MPP benchmarks.
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Content Marketing ROI Calculator
Compute content ROI with realistic compounding-traffic math. Per-piece economics, 12 to 36 month ROI ranges.
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Experimentation and growth 2
Size A/B tests properly and model viral growth before betting the budget on either.
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Marketing Sample Size Calculator
Two-tailed proportions test sizing. Plug in baseline conversion, MDE, and confidence to see required visitors and days to significance.
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Viral Coefficient Calculator
Calculate K-factor and project user growth over time. Whether your product is truly viral, sub-viral but accretive, or flat.
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Built by the team behind SourceLoop
The same teams using these tools usually need real attribution next.
Each calculator surfaces a question. SourceLoop is the attribution platform that answers it for your specific revenue, channels, and customers, every day.
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