Free Estimate & Quote Generator

All three documents list the same basic things — your business, the client, line items, and a total — but they mean different things to the person reading them.

An estimateis a rough number. You send it before work starts, based on what you know at the time, and both sides expect it might move once the scope is clearer. A contractor might estimate a kitchen remodel at “$8,000–$10,000” before opening a single wall. A freelance designer works the same way — an estimate for a branding project might read “$3,000–$4,000” until the page count is nailed down.

A quoteis a fixed price. Once you send it, you're committing to that number for the scope described, usually until the “valid until” date passes. If a client accepts a quote, you're expected to honor it even if the job takes longer than planned.

An invoiceis a bill. It's sent after work is done (or as a deposit request before it starts) and it asks to be paid, not just approved. The invoice usually inherits its line items directly from the accepted estimate or quote, so the client sees the same numbers they already agreed to.

In practice, plenty of businesses use “estimate” and “quote” interchangeably, which is why this tool covers both — the document itself works the same way either way; only the label and how firm the price is changes.

A good estimate answers the client's next three questions before they have to ask: what am I getting, how much will it cost, and how long is this price good for. At minimum, include:

• Your business details— name, email, and address, so the client knows who they're dealing with.
• An estimate number and date — makes it easy to reference later, especially if you revise the price.
• Itemized line items — a single lump sum looks vague and invites haggling. Breaking work into labor, materials, and add-ons builds trust and gives the client something concrete to cut if the total is too high.
• Tax, if it applies — apply it per line if different items are taxed differently, or once at the bottom if the whole job is taxed the same way.
• A valid-until date— material and labor costs change. Fourteen to thirty days is typical; without a deadline, you're on the hook for old pricing indefinitely.
• Terms — deposit requirements, payment schedule, and what happens if the scope changes once work starts.

The generator above is a one-off tool: fill it in, download a PDF, done. Once a client accepts an estimate, though, you still have to turn it into a real invoice, and retyping the same line items is where mistakes creep in — a wrong quantity, a missed tax rate, a total that no longer matches what was agreed.

A free SendBilling account removes that step. Create the estimate in the app instead of this standalone tool, send it to the client from a branded public link, and once they accept it, click Convert to invoice — the client, every line item, tax rate, and total carries over into a new invoice automatically. You track its status, send payment reminders, and get paid without ever re-entering a number.

It also keeps a history: every estimate stays linked to the invoice it became, so if a client questions a charge months later, the original quoted price is one click away.