Electrically　heated　electrodes　have　been　applied　for　various　chemical　and　biological　sensors.　However,　previous　electrically　heated　electrodes,　including　microwires　and　microdiscs,　are　usually　small　and　often　suffer　from　the　requirement　of　frequent　calibrations　of　the　electrode　surface　temperature　(Ts)　at　different　environment　temperatures.　Here,　we　fabricate　a　temperature-controllable　disk　electrode　(TCDE)　with　a　conventional　size　(3-5　mm　in　diameter).　A　one-parameter　temperature　calibration　is　proposed　using　a　temperature　transfer　coefficient　α　and　a　structural　model　(Ts　=　Te　+　α　(Th　-　Te))　to　estimate　Ts　(Th　and　Te　are　the　temperature　of　the　heating　element　and　environment,　respectively).　The　value　of　α　is　unique　for　a　TCDE　and　mainly　dependent　on　the　structure　and　materials　of　the　electrodes　and　the　solution　in　nature.　Once　α　is　experimentally　determined,　Ts　can　be　calibrated　and　found　to　be　applicable　to　wide　fluctuations　in　room　temperature　(15.0-33.0　°C)　with　errors　below　1.5%　for　three　types　of　disk　electrodes　(gold,　glassy　carbon,　and　platinum).　The　required　Ts　can　be　obtained　by　just　setting　Th　without　thermal　characterization　between　the　heating　power　and　Ts.　A　simple　relationship　for　exploring　the　dependence　of　α　on　the　height　(H)　and　radius　(R)　of　the　electrode　materials　and　other　constants　(a,　b,　c,　and　R0),　α　=　1　-　c　-　aH　-　b　(R　-　R0)2,　is　revealed　by　numerical　simulations　(COMSOL).　The　impact　of　the　radii　of　both　the　insulating　materials　of　the　electrode　and　the　electrochemical　cells　on　Ts　is　also　considered.　The　effect　of　the　solution　thermal　conductivity　on　α　is　studied.　TCDEs　are　expected　to　be　used　as　a　sensor　platform　with　enhanced　performance.　©　2019　American　Chemical　Society.