digtools
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point calculator,

Credit Card Points Calculator

Calculate annual points from spending & reward rate. Compare up to 5 cards side by side.

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Multi-Card Comparison
Compare up to 5 cards side by side
Card Presets
One-click setup for major Japanese cards
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Annual Simulation
Calculate annual points from monthly spend
¥ / month

🔒Card info is never sent to any server. All calculations run locally in your browser.

* Note: Preset reward rates are typical values and do not account for bonus merchant rates or tier bonuses. No affiliate links.

about,

About

This tool calculates reward points earned from your monthly spending and lets you compare multiple credit cards side by side. It accounts for annual fees so you can see the true net benefit of each card at a glance. All calculations run locally in your browser.

how to,

How to Use

STEP 1

Enter Monthly Spending

Enter the total amount you charge to credit cards per month.

STEP 2

Set Card Reward Rates

Choose a preset card or manually enter the card name, reward rate, and annual fee.

STEP 3

Review Comparison Results

Review monthly/annual points and net benefit after annual fee to pick the best card.

glossary,

Glossary

Reward Rate
The percentage of spending returned as points. E.g., 1% = 1 point per ¥100 spent.
Annual Fee
The yearly cost of holding a credit card. Must be deducted from the annual points to calculate net benefit.
Net Benefit
Annual points earned (in credits) minus the annual fee. The most important metric for comparing cards.
Miles Conversion
Converting points to airline miles. Often 1 mile ≈ ¥2–3 value, making the effective reward rate higher.
Bonus Merchant Rate
Extra points at partner merchants. Not included in base rate; adjust the reward rate field manually.
Points Expiry
Points may expire if unused within a certain period. Always check each card's expiry policy.
faq,

FAQ

Q.Is my card data sent to a server?
No. All calculations run locally in your browser. Your spending and reward data never leave your device.
Q.Can I include bonus merchant rates?
Not automatically. Manually add the bonus to the reward rate field (e.g., enter 5% if the card offers 5% at a specific merchant).
Q.Is the calculation based on 1 point = ¥1?
Yes. For programs with different redemption rates (e.g., miles), adjust the rate manually to reflect the true credits value.
Q.How many cards can I compare?
Up to 5 cards simultaneously.
Q.What unit is the annual fee entered in?
Enter the yearly fee in credits (e.g., 5500 for ¥5,500/year).
use cases,

Use Cases

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Choosing a New Credit Card

Compare candidate cards to find which offers the best net return for your spending pattern.

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Household Budget Optimization

See how much you're currently earning and identify opportunities to switch to a more rewarding card.

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High-Value Purchase Decisions

Before a big purchase, check which card in your wallet earns the most points.

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Miles vs Points Comparison

Set the reward rate to the mile's credits equivalent to compare miles and cashback cards fairly.

Send Feedback

Please let us know your thoughts to help us improve the tool.

Disclaimer

The tools provided on this site are completely free to use, but please use them at your own risk. We make no guarantees regarding the accuracy, completeness, or safety of any calculation results, conversion results, or generated data. Please be aware that the operator assumes no responsibility for any damages or troubles caused by the use of these tools. Most tools process files and calculations locally in your browser, meaning your inputted data is neither sent to nor stored on our servers.