Amazon KDP Royalty Calculator
Use this simple tool to estimate royalty per sale and monthly earnings for Kindle eBooks and paperback books on Amazon KDP.
How this Amazon KDP calculator helps authors
If you publish through Kindle Direct Publishing, your pricing decisions directly affect your profits. This Amazon KDP calculator gives you a practical estimate of what you might earn per sale and per month. Instead of guessing, you can test multiple price points in seconds.
Most new self-published authors ask the same questions:
- Should I price my Kindle book at $2.99, $4.99, or higher?
- How much does file size reduce eBook royalties?
- How many copies do I need to sell to hit my monthly income target?
- Is paperback still worth offering if print costs are high?
This page is built to answer those questions quickly with a realistic model.
Understanding KDP royalties
Kindle eBook royalties
Kindle books generally use either a 35% or 70% royalty option. In many markets, the 70% option applies only within an eligible price range and includes a delivery charge based on file size.
The simplified formula used here:
- 35% plan: Royalty per sale = List Price × 0.35
- 70% plan: Royalty per sale = (List Price × 0.70) − Delivery Cost
Delivery Cost is estimated as File Size × Delivery Fee Per MB.
Paperback royalties
Paperback books on KDP typically pay 60% of list price before print costs. Print costs vary by trim size, paper, market, and color settings. To keep this calculator quick, we use a practical estimate:
- Estimated print cost: $0.85 + (per-page cost × page count)
- Per-page cost: $0.012 for black and white, $0.07 for color interior
- Royalty per sale: (List Price × 0.60) − Print Cost
Example royalty scenarios
| Format | List Price | Assumptions | Approx. Royalty Per Sale |
|---|---|---|---|
| Kindle eBook | $4.99 | 70% plan, 2 MB file, $0.15/MB delivery fee | $3.19 |
| Kindle eBook | $2.99 | 35% plan | $1.05 |
| Paperback | $12.99 | 200 pages, black and white interior | $4.58 |
| Paperback | $19.99 | 120 pages, color interior | $3.59 |
Pricing strategy tips for KDP authors
1) Start with your audience, not just your royalty
A higher list price can increase revenue per sale, but it may reduce conversion. Test prices where your ideal reader still feels the purchase is an easy “yes.”
2) Optimize file size for eBooks
Heavy image files can reduce net earnings under the 70% plan. Compress images and remove unnecessary graphics where possible. Lower file size improves both royalty efficiency and reader download speed.
3) Calculate from income goal backward
Use target-based planning. If you need $1,000/month and your royalty per sale is $2.50, your target is roughly 400 sales/month. The calculator does that math for you automatically.
4) Offer both eBook and paperback when possible
Some readers only buy digital, others only buy print. Multi-format publishing can widen your audience and increase total monthly revenue.
Common mistakes this calculator helps avoid
- Choosing 70% royalty without checking delivery impact.
- Setting paperback prices too low to cover print costs.
- Ignoring monthly volume and focusing only on royalty per sale.
- Assuming all marketplaces behave exactly the same.
Important note about accuracy
This Amazon KDP calculator is intended for planning and educational use. Actual KDP payouts can vary based on marketplace, VAT/tax, expanded distribution, trim size, paper selection, and Amazon policy updates. Always confirm your final numbers inside your official KDP dashboard before publishing.
Final thoughts
Successful self-publishing is part craft, part math. You write the best book you can, then price and package it intelligently. Use the calculator above to test scenarios, compare formats, and create a monthly sales plan you can execute with confidence.