The Hidden Cost of 28-Day Recharge Plans
Most operators sell monthly plans valid for 28 days instead of a calendar month. A year has 365 days, so a 28-day plan renews about 13 times a year while a 30-day plan renews about 12 times. This calculator shows the real yearly cost of any two plans so you can see the difference in rupees.
How to Use This Tool
- Enter the price and validity of Plan A (default 28 days).
- Enter the price and validity of Plan B (default 30 days).
- Click Calculate to see recharges per year and the yearly cost of each.
- The tool shows which plan is cheaper and by how much.
Formula Used
Recharges Per Year = 365 ÷ Validity Days
Yearly Cost = Plan Price × (365 ÷ Validity Days)
Yearly Cost = Plan Price × (365 ÷ Validity Days)
Example: A ₹299 plan with 28 days renews 13.04 times a year, costing about ₹3,898. A ₹319 plan with 30 days renews 12.17 times, costing about ₹3,881. The higher price is slightly cheaper overall.
Money-Saving Tips
- Always compare yearly cost, not the price on the pack.
- Prefer plans that follow the calendar month (same date every month) if available.
- An 84-day or 365-day plan removes most of the extra recharge cycles.
- Set a reminder so you recharge on the expiry date and never lose days.
Frequently Asked Questions (FAQs)
1. Why are plans valid for 28 days?
Operators set many plans to 28 days, which creates 13 billing cycles a year instead of 12.
2. Can I compare any two plans?
Yes. Change the price and validity of either plan to compare any two packs.
3. Is the result exact?
It is an estimate based on 365 days a year. Taxes or offers on your operator app may change the final price.
A small difference in validity can add up to a big difference in yearly spending. You can also try our Mobile Recharge Validity Calculator to find your exact plan expiry date.