Skip to main content
Calcimator

Prescription Cost Comparator

Compare prescription medication costs across up to three pharmacies to find the best deal.

About this calculator

Retail pharmacy prices for the same medication can vary sharply between chains, independent pharmacies, and mail-order options -- often by a factor of two or more for the identical drug, strength, and quantity, since cash prices are set independently by each pharmacy or negotiated separately by each pharmacy benefit manager. This calculator multiplies the per-pill cost you enter for up to three pharmacies by the number of pills you take each month and the number of months per year you take the medication, producing an annual cost for each option so a small per-pill difference is scaled up to the real dollar amount it represents over a year. It then identifies which of the three annual totals is lowest and reports the gap between the cheapest and most expensive option as your maximum potential savings.

The comparison is only as accurate as the prices you enter -- pharmacy cash prices change, prescription discount cards and manufacturer coupons can undercut both the cash price and insurance copay, and a plan's mail-order or 90-day-supply pricing often differs from its 30-day retail price at the same pharmacy. Because the calculator has no connection to real-time pricing data, treat its output as a framework for comparing quotes you've already collected -- by phone, a pharmacy's website, or a discount-card app -- rather than as a live price lookup. Re-running the comparison whenever you switch medications, dosages, or pharmacies keeps the savings estimate current.

Best Pharmacy (#)

1

Maximum Savings

$180.00

Inputs

$
$
$

Comparison

Pharmacy 1 Annual Cost

$540.00

Pharmacy 2 Annual Cost

$720.00

Pharmacy 3 Annual Cost

$630.00

How to Use This Calculator
  1. Enter Pharmacy 1 Cost Per Pill, Pharmacy 2 Cost Per Pill, and Pharmacy 3 Cost Per Pill.
  2. Set Pills Per Month and Months Per Year.
  3. Review Best Pharmacy (#) and Maximum Savings ($).
  4. Use Pharmacy 1 Annual Cost ($) and Pharmacy 2 Annual Cost ($) to inform your decision.

What each input means

Pharmacy 1 Cost Per Pill
Cost per pill at Pharmacy 1.
Pharmacy 2 Cost Per Pill
Cost per pill at Pharmacy 2.
Pharmacy 3 Cost Per Pill
Cost per pill at Pharmacy 3.
Pills Per Month
Number of pills consumed per month.
Months Per Year
Number of months per year you take this medication.

How this is calculated

Worked example, using the default values

  1. Identify Input Parameters
    4 parameters
    Pharmacy 1 Cost Per Pill = 1.5, Pharmacy 2 Cost Per Pill = 2, Pharmacy 3 Cost Per Pill = 1.75, Pills Per Month = 30 = 5 input(s) provided
  2. Calculate Best Pharmacy
    Best Pharmacy
    1 = 1
  3. Calculate Maximum Savings
    Maximum Savings
    180 = $180
  4. Calculate Pharmacy 1 Annual Cost
    Pharmacy 1 Annual Cost
    540 = $540
  5. Calculate Pharmacy 2 Annual Cost
    Pharmacy 2 Annual Cost
    720 = $720

Engine last updated . Checked against 1 independently-derived test — how we verify calculators. Built by Paul Gunder, a software engineer, not a licensed financial, medical, or legal professional.

Frequently Asked Questions

Why do the same pills cost different amounts at different pharmacies?

Pharmacies set their own cash prices and separately negotiate reimbursement rates with each insurer or pharmacy benefit manager, so the price for an identical drug, strength, and quantity can differ by a large margin between a chain pharmacy, an independent pharmacy, and a mail-order service. Discount programs and coupons add another layer of price variation on top of the sticker price.

How is the annual cost calculated?

Annual cost equals the cost per pill at a given pharmacy, multiplied by the number of pills you take per month, multiplied by the number of months per year you take the medication. Entering accurate monthly pill counts matters more than the per-pill price alone, since a medication taken year-round accumulates a much larger annual difference than one taken for only a few months.

Does this calculator check real-time pharmacy prices for me?

No. It only does the arithmetic on the per-pill prices you enter yourself, so it can't catch a price that changed since you last checked. Gather current quotes from each pharmacy's website, phone line, or a discount-card app before comparing, and re-check periodically since retail drug prices shift over time.

Should I switch pharmacies just to save money on one prescription?

Maximum Savings shows the raw dollar gap between your cheapest and most expensive quoted option, but it doesn't account for convenience, whether all your prescriptions are filled at one location, or whether a discount card requires paying cash instead of using insurance. Weigh the calculated savings against those practical factors before switching.

The questions that sit next to this one — chosen by subject, including calculators filed under a different category.

More in Medical & Clinical.