↗ScopeKitFree calculator · No signup
For freelance web designers

Price the extra work.

Download this free HTML calculator for offline use

Turn an estimate of hours into a clear proposed change fee. Check the agreed scope before treating a request as additional work.

Fee = hours × rate × (1 + buffer / 100) + direct costs. Buffer applies to labour only. Tax is excluded. The rate and buffer are your assumptions.

Proposed change fee · excluding tax
€207.00

Labour €180 + buffer €27.

An illustrative default estimate. This is not an invoice, approval or payment record.

Before you send the price.

  1. Is the request a new deliverable or a correction to the agreed brief?
  2. Write down exactly what is included in the change.
  3. State the effect on the delivery schedule and required client inputs.
  4. Get clear written approval before starting the added work.
The complete ScopeKit · €19 before applicable tax

Keep the conversation
and the record together.

The full offline toolkit adds project scope, a client-message generator, an approval-reference log, revised project totals, JSON backups and 12 editable client messages.

Explore the full ScopeKit ↗

One-time download. EUR, USD, GBP and CZK in the full tool. No subscription.

This calculator runs locally and does not store inputs or send them over the network. The product link opens Gumroad when you choose it. Business workflow aid, not legal advice. Privacy notes & support.