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Free tool · Programmatic and media math
Ad Budget Pacing Calculator
Enter the flight budget, length, days gone and spend so far. You get pacing in percent, the projected end spend and the daily budget that lands the flight on target.
- Free, no sign-up
- Runs in your browser
- Checked 19 October 2026
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How it works
How to use the Ad Budget Pacing Calculator
- Enter the flight budget and length.
- Enter how many full days have run and the spend so far.
- Read the pacing verdict and the daily budget to finish on target.
| What | How it's worked out |
|---|---|
| Planned spend to date | Budget × days elapsed ÷ flight length |
| Pacing | Actual spend ÷ planned spend |
| Projected end spend | Daily run rate × flight length |
| Daily budget to land | (Budget − spent) ÷ days left |
From our media team
How to use the result
- Treat 90–110% as on pace. Outside that, fix bids, budgets or targeting before the gap compounds.
- Know the platform's daily rules. Google Ads can spend up to twice the average daily budget on a day and no more than 30.4 times it in a month. ChatGPT ads average over a seven-day week.
- Don't rescue a flight with bids alone. Doubling bids to catch up usually buys worse inventory; extend the flight or move budget.
Read next
- Budget pacing for B2B ads: rules by platform and how to fix a flightHow budget pacing works in Google Ads (2× daily, 30.4× monthly), ChatGPT ads (seven-day budget week) and DSPs, the pacing formula, the 90–110% rule and what to do…
- Flighting, pulsing or always-on: scheduling B2B mediaContinuous, flighted and pulsed schedules compared for B2B: what each does to reach, memory and cost, why the 95:5 rule favours steady presence, when bursts make…
- How daily budgets work in ChatGPT adsDaily budgets in ChatGPT ads are seven-day averages: up to 2× on any day and 7× over the Sunday–Saturday week. Mid-day and mid-week change rules.
- How to build a B2B media plan: accounts, reach, budget and KPIsA one-page B2B media plan that a CFO and a media buyer can both read: target accounts, people per account, reach and frequency, channel roles, budget per line,…
Questions
Straight answers.
What does 'over-pacing' mean?
Spend is ahead of plan for this point in the flight. At the current rate the budget runs out early or the flight overspends.
Why does Google spend more than my daily budget?
Google Ads lets a campaign spend up to twice its average daily budget on a single day, but no more than 30.4 times the daily budget in a month.
How often should I check pacing?
Daily in the first week and after any change, then two or three times a week.
Does this work for lifetime budgets?
Yes. Enter the lifetime budget as the flight budget and the campaign dates as the flight length.
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Sources: Google Ads Help: About overdelivery and your average daily budget.
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