$25+
Verified Top PickCasio's US calculator pages offer free shipping on calculator purchases of $25 or more online, with no promo code needed. This covers graphing, scientific and basic calculators such as the fx-9750GIII and fx-300ES PLUS 2nd Edition.
Limited Time Offer
Schools
VerifiedCasio's Educator Rewards Program gives teachers, professors and schools two calculators of the same model free for every 40 purchased. Purchases from casio.com, stores or distributors count, and qualifying models include the fx-CG50 PRIZM, fx-9750GIII, fx-991CW ClassWiz and fx-55 PLUS.
Limited Time Offer
Teachers
VerifiedCasio sells teacher packs of its classroom calculators on casio.com, including the fx-300ES PLUS 2 Teacher Pack, the fx-300MS PLUS 2 Teacher Pack and the SL-450S Teacher Pack, for equipping a whole class with the same model.
Limited Time Offer
ID.me
VerifiedVerified service members, first responders and healthcare workers get a one-time 10% off code by email after confirming their status with ID.me on Casio's military discount page. It applies to G-SHOCK and BABY-G, excludes sale and outlet items and items over $999.99, and is limited to one per customer per 30 days.
Expires: Dec 31, 2026
Outlet
VerifiedThe Casio outlet lists Casio, G-SHOCK, Edifice and Baby-G watches at 40% off. Outlet products may have imperfect packaging or a missing manual, but the watches themselves are new.
Limited Time Offer
$99+
VerifiedOrders of other Casio products, including watches from the outlet, ship free in the US when the order is over $99. Calculator orders have their own lower free shipping threshold of $25.
Limited Time Offer
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Extra codes from partner brands, refreshed alongside this store's offers.
A practical savings guide for shoppers using Casio Calculators offers.
Casio does not publish a general discount code for calculators. Its savings on casio.com come from free shipping thresholds, the Educator Rewards Program and an ID.me verified discount, plus 40% off outlet watches.
Service members, first responders and healthcare workers who verify with ID.me receive a one-time 10% off code by email for G-SHOCK and BABY-G watches. It excludes sale and outlet items and items listed over $999.99, is limited to one coupon per customer per 30 days, and expires on December 31, 2026.
The Casio outlet sells Casio, G-SHOCK, Edifice and Baby-G watches at 40% off. These may have imperfect packaging or a missing manual, but the products are new. Orders of other Casio products ship free over $99.
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