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Paid Ads Forecaster.

A budget-to-leads simulator for performance marketers who hate guessing. Plug in your monthly spend, channel mix, average CPC and conversion rate — get a 90-day projection of clicks, leads and cost-per-acquisition. Free, browser-only, no signup.

Open the tool ↗ How it works
budget.ankitsaxena.co.uk ● live
£
£
£2.20per click
2.8%
// Clicks / mo 13.6k across 3 channels
// Leads / mo 381 @ 2.8% CVR
// Real CAC £79 target £80 ✓
// 12-month leads forecast projected
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● 01 — How it works

Three steps. One number that decides your quarter.

[ ~60 seconds ]
// STEP 01
£

Plug in your budget

Monthly spend, target cost-per-acquisition, and the channels you're considering — Google, Meta, Bing, LinkedIn. Sliders are pre-loaded with sensible benchmarks if you don't know yours yet.

// STEP 02
∑

Watch the maths run

The forecaster blends your CPC and conversion rate against channel-mix weights, applies a confidence band based on £12M+ in real campaign benchmarks, and projects clicks, leads and CAC for each of the next 12 months.

// STEP 03
↗

Stress-test & share

Move the sliders and watch the forecast re-render live. Hit the share button to send a frozen-state URL to your CFO, or export to CSV. No account needed, no data leaves your browser.

● 02 — Inputs

What the tool needs — and how to guess well.

[ glossary ]
// Monthly budget
The total ad spend you can commit per month, including platform fees. The forecaster handles £500 to £500k+. Don't include agency or tooling costs.
// Avg CPC
Your average cost-per-click blended across keywords or audiences. Pull this from the last 90 days in Google Ads, or use the benchmark slider — defaults sit around £2.20 for B2B services.
// Conversion rate
The share of clicks that become leads (or sales). Most B2B lead-gen pages convert at 2–4%; well-tuned DTC checkouts at 1.5–3%. Slider tooltips show the percentile.
// Target CPA
The most you can pay for a lead or acquisition and still hit your unit economics. Used as a green/amber/red flag against the projected real CAC.
// Channel mix
Which platforms split your spend. Each channel has different median CPC and CVR multipliers — LinkedIn is ~3× more expensive than Google for the same lead, but converts higher-intent traffic.
// Seasonality (auto)
Applied automatically based on your industry pick. Q4 retail spike, education July dip, B2B lull in August — the 12-month chart bakes these in.
// Real spend benchmarks £12M+ From accounts I've personally managed across 9 years.
// Channels modelled 04 Google, Meta, Bing, LinkedIn — Amazon & TikTok next.
// Forecast horizon 12 mo With seasonality & confidence bands per month.
// Cost £0 Free forever. Browser-only. No data leaves your laptop.
● 03 — Questions

The ones I get every discovery call.

[ click to expand ]
/ 01 Is this just a fancy spreadsheet? +
Honestly, kind of — but it's a spreadsheet with the unit-economics maths already in it, sensible benchmarks loaded, and seasonality baked into the 12-month view. Marketers waste hours rebuilding this in Excel for every pitch. The forecaster is the version I wish I'd had on day one.
/ 02 How accurate are the projections? +
Within ±15% of actual when you feed it real CPC and CVR from your account history. With benchmark defaults it's a directional planning tool — good enough to size a Q3 budget request, not a substitute for actual campaign data after week 4.
/ 03 Where do the benchmarks come from? +
From £12M+ in real campaign spend across the accounts I've managed since 2017 — B2B SaaS, lead-gen, education, fintech and DTC e-commerce in the UK and India. Outliers stripped, medians blended by industry vertical.
/ 04 Does it support Amazon Ads or TikTok? +
Not yet. The current build covers Google Search & Shopping, Meta (FB + IG), Microsoft Bing, and LinkedIn. Amazon Sponsored Ads and TikTok are shipping in v2, alongside CSV import for past 90-day account data.
/ 05 Is my data sent anywhere? +
No. Everything runs client-side — the forecast computes in your browser, scenarios are stored in localStorage, share-links encode state in the URL. Zero analytics on input fields, no server, no account.
/ 06 Can you customise it for my agency? +
Yes — whitelabelled versions with your benchmarks, branding and an embedded lead form sit at £2.5k for setup. Drop me a brief on the contact page.

Stop guessing.
Start forecasting.

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© 2026 Ankit Saxena
Free tool · MIT-spirited · No tracking.
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