Our forecasting equation
Required accepted shots = ceiling(final approved seconds ÷ billed shot seconds). Planning generated seconds = accepted shots × expected attempts per accepted shot × billed shot seconds. Credits needed = generated seconds × verified credits per billed second. Shortfall = max(0, total planned credit demand − available balance).
The calculator's numerical defaults are invented teaching examples. Users must supply their own current billing data and a realistic attempt assumption. They are not historical test data.
Evidence categories
- Officially verified: direct vendor documentation or billing screen, dated and linked.
- Measured: original attempt and usage logs from a specified, counted sample.
- Estimated: a hypothetical scenario or planning reserve, labeled as such.
- Unresolved: rights, pricing, or comparability information insufficient to recommend spending.
Primary references
Consult current vendor documentation when changing any real generation settings; rates and eligibility may evolve after publication.
- Runway official Help Center — confirm model costs, plan benefits and billing rules in the live account.
- Google AdSense: site readiness and original content — editorial quality and navigation principles.
- Google AdSense: why a site may not be ready — policy, crawl, code and content checkpoints.
Provider documentation: what to check before spending
Our examples intentionally use editable or fictional rates. For a real estimate, first check the provider's own documentation and the logged-in billing screen for your workspace. These external references are not endorsements:
- Runway — How do credits work? (accessed October 19, 2026). Includes model-specific credits, plan allowances, and the distinction between monthly and purchased credits.
- Runway — unused credits and renewal dates (accessed October 19, 2026). Check your actual plan and billing date before assuming a rollover.
- Runway API — usage and billing (accessed October 19, 2026). Web application subscriptions and API credits are distinct systems: do not transfer prices without checking the actual product.
Practical worksheets to keep your own evidence
Download a 12-shot budgeting worksheet (CSV) to record billed seconds, attempts, credits and rejections for each shot. Rows are intentionally empty: we have not inserted imagined production results. For the complete project, use the total-cost ledger (CSV) to record labor, rights, audio, editing, exports, and verified spend separately. Both are blank templates, not datasets or benchmark reports.
Interpreting the formula
Average attempts may be fractional as a forecast, but actual generations are whole events and products often bill fixed clip durations. Quoting decimal expected attempts is not evidence that a provider allows fractional generation requests. The estimator forecasts planning demand and is not a real-time pricing API.
What we do not do
We do not claim that fictional planning cases are independent tests. We do not sell priority rankings, accept unpublished vendor price data as verified, or claim that hosting a site or publishing a certain number of articles guarantees AdSense approval. No reviews of paid services are presented without supporting tests.
Corrections
If a methodology error is identified, we correct the affected pages and add a visible update note for material revisions. Corrections are welcome at kimkidong1402@gmail.com. Include the page URL, a brief description, and a source when possible.