Under $100 buys a true-RMS clamp with non-contact voltage from Klein Tools, Extech or UNI-T, and even a 1,000 A AC/DC clamp with a CAT IV rating. Check whether a cheap clamp reads DC through the jaw and what its CAT rating is before you buy.
Prices were last checked November 9, 2026. Product prices and availability are accurate as of that date and are subject to change; the price and availability shown on Amazon or the retailer's site at the time of purchase apply. As an Amazon Associate we earn from qualifying purchases.
Best Clamp Meters Under $100: AC only
- Klein Tools CL445#1 of 6Full review
An HVAC clamp with inrush, flame-sensor microamps and a CAT IV rating at a mid-range price.
Amazon $94.85$94.85600 ANoCAT IV 600 V / CAT III 750 V - Klein Tools CL220#2 of 6Full review
A low-cost true-RMS AC clamp for home and light electrical work, with temperature for basic HVAC checks.
Amazon $69.97$69.97400 ANoCAT III 600 V - Extech MA440#3 of 6Full review
A plain true-RMS AC clamp for electricians and technicians who only need current, voltage and resistance.
Amazon $66.99$66.99400 ANoCAT III 600 V - Fluke 302+#4 of 6Full review
A basic AC clamp for occasional current checks on plain resistive and motor loads, at an entry price.
Amazon $88$88400 ANoCAT IV 300 V / CAT III 600 V - Klein Tools CL120#5 of 6Full review
An inexpensive AC clamp for homeowners and apprentices who need occasional current and voltage checks.
Amazon $63.89$63.89400 ANoCAT III 600 V - Southwire 21510N#6 of 6Full review
A basic AC clamp for household circuits, with the fewest published specs in this list.
Amazon $65.81$65.81400 ANoCAT III 600 V
Best Clamp Meters Under $100: AC/DC
- Klein Tools CL390#1 of 4Full review
An affordable true-RMS AC/DC clamp that suits DIY solar, automotive and general electrical work.
Amazon $86.27$86.27400 A400 ACAT III 600 V - Southwire 21550T#2 of 4Full review
A true-RMS AC/DC clamp with handy jobsite touches, for electricians who don’t need inrush or a CAT IV rating.
Amazon $90.57$90.57400 A400 ACAT III 600 V - UNI-T UT204R#3 of 4Full review
A low-cost AC/DC clamp for car, solar and household work where a high safety rating isn’t needed.
Amazon $76.49$76.49600 A600 ACAT III 300 V / CAT II 600 V - UNI-T UT210E#4 of 4Full review
A pocket AC/DC clamp for automotive, electronics and small-appliance work where low-current resolution matters more than range.
Amazon $59.39$59.39100 A100 ACAT III 300 V / CAT II 600 V
Best Clamp Meters Under $100: 1,000 A and up
- KAIWEETS HT208D#1 of 1Full review
The cheapest way to a 1,000 A AC/DC clamp with a CAT IV rating, for DIYers and electricians on a budget.
Amazon $79.99$79.991,000 A1,000 ACAT IV 600 V / CAT III 1,000 V
